Improvement in machines for turning locomotive crank-pins



BSheets-Sheetl. L. B. FLANDERS.

MACHINE FOR TURNING LOCOMOTIVE CRANK-PINS. No.188,008. Patented March6,1877.

N PETERS PHOTO LITHOGRAPHER NASHINGTO D C 3 Sheets-Sheet 2.

L. B. FLANDERS. MACHINE .FOR TURNING LOCOMOTIVE CRANK-PINS. No. 188,008.

Patented March 6,1877.

3 Sheets-Sheet 3. L. B. FLANDERS, MACHINE FOR TURNING LOCOMOT'IVECRANK-PINS. N ,188,008, a Patented March 6,1877.

N. PEI'BIS. FHOTO-LITHOGRAPHER WASHINGTON. a C

UNITED STATS LUOIAN B. FLANDERS, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN MACHINES FOR TURNING LQCOMQTIVE CRANKPINS.

Specification forming part of Letters Patent No. 188,008, dated March 6,1877; application filed July 3, 1876.

To all whom it may concern:

Be it known that I, LUOIAN B. FLANDERS, of the city and county ofPhiladelphia, Pennsylvania, have invented a new and Improved Crank-PinTurning and Wheel-Boring Machine; and I hereby declare the following tobe a full, clear, and exact description of the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon.

My invention relates to the rotating toolcarrying cylinder, and the modeof rotating and feeding the same, and to the method of securing the samein position, and to the manner of securing the cutting or boring tool,and to devices for securing the center, as hereinafter described.

The object of the invention is to enable the construction and operationof a secure, firm, and compact machine for turning crank-pins and forboring holes for crank-pins, and any other purpose wheresaid machine canbore or turn to advantage.

In order to enable others to use and practice my invention, I willproceed to describe its construction and operation.

On reference to the accompanying drawings, which form part of thespecification,

Figure 1 is a vertical section across'lines 5 and 6 of Fig. 2, throughthe center of the machine; Fig. 2, a top view with the cover removed,across lines 1 and 2 of Fig. 1 Fig. 3,

a top view across lines 3 and 4 of Fig. 1; Fig. 4, a vertical sectionthrough the center of the toolcarrying cylinder, with the boring-tool inposition and Fig. 5, a bottom view of the boring-tool post y.

Similar letters refer to similar parts throughout the several views.

d, Fig. 1, is a heavy cast-metal ring, projecting from which are fourcolumns, a, the said columns being secured at their upper ends tothecap-plate 7. Theinner walls of thecolumns n are bored true for thereception of the toolcarryingcylinder m, which has bearing against thesaid inner walls of the columns. One of these columns is bored for thereception of the feed-screw p and its nut Z. The projections on the nut1 enter the grooves on the periphery of the cylinder m, for the purposeof giving longitudinal motion to said cylinder by means of saidfeed-screw p. One of the said columns n is bored for the reception ofthe operating-shaft 0, which shaft is provided with a key or feather forthe purpose of rotating the pinion i, which meshes with spur-teethformed around the periphery of the cylinder m, by means of which saidcylinder is rotated, the power being applied by hand or otherwise to theouter end of the shaft 0. a is an ordinary locomotive crank-pin, tittedin position for turning, and it is secured in concentric po sition byordinary chuck-jaws w, operated by ordinary spiral cam-grooves, themachine being secured firmly to the crank-wheel by clamps interlockingin dovetail grooves 8 of the ring d, and secured firmly by bolts to thecrank-wheel. The center b is held securely in its cast framef, which issuspended from the cap 7, and insures the concentric location of themachine and aids in detecting the bent crankpins. The center b isoperated by the screw 1", by crank-wrench applied at its outer end, andis secured against loss of motion by the split hub of the framef withits tighteningscrew g. c is the cutting-tool, held securely in positionby the screw 6 forcing said tool down upon the tapering sides of thetoolchamber in the cylinder. The tapering sides of the tool-chamberprevent all chatter, and secure the tool from twisting out of position.

The feed of the cutting-tool and of the cylinder mis rendered automaticby gearing from the shaft 0 to the screw p, as shown in Fig. 2. Thepinion on the shaft 0 gears into loose pinions u u u, the journals ofwhich are located in the vibrating arm n, operated by the thumbscrew'1), Fig. 1, the shaft of which works in a slot cut in the cover-plate.The vibration of the arm 0 throws either one of the outer pinions tointo gear with the spur-wheel s, giving a movement forward or backward,according as either of said outer pinions u is thrown in or out of gear.There is also an intermediate point where both pinions are out of gear,permitting a free movement of feedscrew 10, by hand, by crank-wrench onits outer end. The spur-wheels s, t, and q communicate motion from theshaft 0 and pinions u to the feed-screw pinion p. Screws and lugs a:secure the upper head-cap in position. The boring attachment 3 Fig. 5,is secured to the tool-carrying cylinder m by bolts or screws 10. Thetool-post is slotted for the reception of the cutter on its outer end,which cutter is secured by an ordinary screw. The base of the saidtool-post terminates in a dovetailed plate, which is caused to traverseacross the face end of the cylinder m upon its plate y, Fig. 5, and iscontrolled by the feed-screw z.

The machine is operated in this wise, after being secured to thecrank-pin wheel by the chuck-jaws w and clamps resting on grooves 8,Fig. 1 The center b is caused to enter the center hole in the end of thecrank-pin, which, if not bent, will come true, because of the face ofthe ring d and the bearing on the wheel being true surfaces; but if thecrank-pin be bent the center b will detect the same, and will show wherea new center-hole should be located concentric with the collar of thecrankpin at the base. After the center b enters the true center-hole inthecrank-pin the machine is ready to turn the crank-pin by insertingthetool a in a proper cutting position, when the tool is rotated around thecrank-pin by revolving the cylinder m by turning the power-shaft 0,asdescribed. The feed motion is thrown into gear by the thumb-screw 11,when the out can be taken continuously from one end of the crankpin tothe other, the tool 0 being caused to take additional cuts by slightraps of a hammer on its outer end. Provisions are made for threecutters, allof which can be operated at one time, if desired.

The boring is conducted in the same manner as the turning, onlyrequiring the substitution of the boring-tool post, as shown in Figs.4and 5. The cutter is secured firmly in position, and the feed for theenlargement of the hole is made by feed-screw z. The feed of thecylinder m is operated automatically "by the screw 1) the same as whenthe device is employed for turning purposes.

It will be evident that the several parts of this invention can beconsiderably modified without any alteration in the result.

What 1 claim, and desire to secure by Letters Patent, is-

1. The combination, with the frame, consisting of the base-plate,columns, and cap, of the cylinder m, substantially .as shown anddescribed.

2. The combination with the frame, consisting of the base-plate,columns, and cap, of the cylinder m, and the boring or turning tool,substantially as and for the purpose set forth.

3. The center b, in combination with framingf, tightening'screw g, andscrew 4", as specified.

4. The arrangement of feed-gearing o, u, s, t, q, and p, in combinationwith screw 12, nut l, and cylinder m, as specified.

L. B. FLANDERS. Witnesses:

WM. GARWOOD, T. SHAW.

